diff options
Diffstat (limited to 'Documentation/kernel-parameters.txt')
-rw-r--r-- | Documentation/kernel-parameters.txt | 50 |
1 files changed, 33 insertions, 17 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index fd5cac013037..4a3c2209a124 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt | |||
@@ -56,7 +56,6 @@ parameter is applicable: | |||
56 | ISAPNP ISA PnP code is enabled. | 56 | ISAPNP ISA PnP code is enabled. |
57 | ISDN Appropriate ISDN support is enabled. | 57 | ISDN Appropriate ISDN support is enabled. |
58 | JOY Appropriate joystick support is enabled. | 58 | JOY Appropriate joystick support is enabled. |
59 | KMEMTRACE kmemtrace is enabled. | ||
60 | LIBATA Libata driver is enabled | 59 | LIBATA Libata driver is enabled |
61 | LP Printer support is enabled. | 60 | LP Printer support is enabled. |
62 | LOOP Loopback device support is enabled. | 61 | LOOP Loopback device support is enabled. |
@@ -329,11 +328,6 @@ and is between 256 and 4096 characters. It is defined in the file | |||
329 | flushed before they will be reused, which | 328 | flushed before they will be reused, which |
330 | is a lot of faster | 329 | is a lot of faster |
331 | 330 | ||
332 | amd_iommu_size= [HW,X86-64] | ||
333 | Define the size of the aperture for the AMD IOMMU | ||
334 | driver. Possible values are: | ||
335 | '32M', '64M' (default), '128M', '256M', '512M', '1G' | ||
336 | |||
337 | amijoy.map= [HW,JOY] Amiga joystick support | 331 | amijoy.map= [HW,JOY] Amiga joystick support |
338 | Map of devices attached to JOY0DAT and JOY1DAT | 332 | Map of devices attached to JOY0DAT and JOY1DAT |
339 | Format: <a>,<b> | 333 | Format: <a>,<b> |
@@ -646,6 +640,13 @@ and is between 256 and 4096 characters. It is defined in the file | |||
646 | DMA-API debugging code disables itself because the | 640 | DMA-API debugging code disables itself because the |
647 | architectural default is too low. | 641 | architectural default is too low. |
648 | 642 | ||
643 | dma_debug_driver=<driver_name> | ||
644 | With this option the DMA-API debugging driver | ||
645 | filter feature can be enabled at boot time. Just | ||
646 | pass the driver to filter for as the parameter. | ||
647 | The filter can be disabled or changed to another | ||
648 | driver later using sysfs. | ||
649 | |||
649 | dscc4.setup= [NET] | 650 | dscc4.setup= [NET] |
650 | 651 | ||
651 | dtc3181e= [HW,SCSI] | 652 | dtc3181e= [HW,SCSI] |
@@ -752,12 +753,25 @@ and is between 256 and 4096 characters. It is defined in the file | |||
752 | ia64_pal_cache_flush instead of SAL_CACHE_FLUSH. | 753 | ia64_pal_cache_flush instead of SAL_CACHE_FLUSH. |
753 | 754 | ||
754 | ftrace=[tracer] | 755 | ftrace=[tracer] |
755 | [ftrace] will set and start the specified tracer | 756 | [FTRACE] will set and start the specified tracer |
756 | as early as possible in order to facilitate early | 757 | as early as possible in order to facilitate early |
757 | boot debugging. | 758 | boot debugging. |
758 | 759 | ||
759 | ftrace_dump_on_oops | 760 | ftrace_dump_on_oops |
760 | [ftrace] will dump the trace buffers on oops. | 761 | [FTRACE] will dump the trace buffers on oops. |
762 | |||
763 | ftrace_filter=[function-list] | ||
764 | [FTRACE] Limit the functions traced by the function | ||
765 | tracer at boot up. function-list is a comma separated | ||
766 | list of functions. This list can be changed at run | ||
767 | time by the set_ftrace_filter file in the debugfs | ||
768 | tracing directory. | ||
769 | |||
770 | ftrace_notrace=[function-list] | ||
771 | [FTRACE] Do not trace the functions specified in | ||
772 | function-list. This list can be changed at run time | ||
773 | by the set_ftrace_notrace file in the debugfs | ||
774 | tracing directory. | ||
761 | 775 | ||
762 | gamecon.map[2|3]= | 776 | gamecon.map[2|3]= |
763 | [HW,JOY] Multisystem joystick and NES/SNES/PSX pad | 777 | [HW,JOY] Multisystem joystick and NES/SNES/PSX pad |
@@ -1054,15 +1068,6 @@ and is between 256 and 4096 characters. It is defined in the file | |||
1054 | use the HighMem zone if it exists, and the Normal | 1068 | use the HighMem zone if it exists, and the Normal |
1055 | zone if it does not. | 1069 | zone if it does not. |
1056 | 1070 | ||
1057 | kmemtrace.enable= [KNL,KMEMTRACE] Format: { yes | no } | ||
1058 | Controls whether kmemtrace is enabled | ||
1059 | at boot-time. | ||
1060 | |||
1061 | kmemtrace.subbufs=n [KNL,KMEMTRACE] Overrides the number of | ||
1062 | subbufs kmemtrace's relay channel has. Set this | ||
1063 | higher than default (KMEMTRACE_N_SUBBUFS in code) if | ||
1064 | you experience buffer overruns. | ||
1065 | |||
1066 | kgdboc= [HW] kgdb over consoles. | 1071 | kgdboc= [HW] kgdb over consoles. |
1067 | Requires a tty driver that supports console polling. | 1072 | Requires a tty driver that supports console polling. |
1068 | (only serial suported for now) | 1073 | (only serial suported for now) |
@@ -1575,6 +1580,9 @@ and is between 256 and 4096 characters. It is defined in the file | |||
1575 | noinitrd [RAM] Tells the kernel not to load any configured | 1580 | noinitrd [RAM] Tells the kernel not to load any configured |
1576 | initial RAM disk. | 1581 | initial RAM disk. |
1577 | 1582 | ||
1583 | nointremap [X86-64, Intel-IOMMU] Do not enable interrupt | ||
1584 | remapping. | ||
1585 | |||
1578 | nointroute [IA-64] | 1586 | nointroute [IA-64] |
1579 | 1587 | ||
1580 | nojitter [IA64] Disables jitter checking for ITC timers. | 1588 | nojitter [IA64] Disables jitter checking for ITC timers. |
@@ -1660,6 +1668,14 @@ and is between 256 and 4096 characters. It is defined in the file | |||
1660 | oprofile.timer= [HW] | 1668 | oprofile.timer= [HW] |
1661 | Use timer interrupt instead of performance counters | 1669 | Use timer interrupt instead of performance counters |
1662 | 1670 | ||
1671 | oprofile.cpu_type= Force an oprofile cpu type | ||
1672 | This might be useful if you have an older oprofile | ||
1673 | userland or if you want common events. | ||
1674 | Format: { archperfmon } | ||
1675 | archperfmon: [X86] Force use of architectural | ||
1676 | perfmon on Intel CPUs instead of the | ||
1677 | CPU specific event set. | ||
1678 | |||
1663 | osst= [HW,SCSI] SCSI Tape Driver | 1679 | osst= [HW,SCSI] SCSI Tape Driver |
1664 | Format: <buffer_size>,<write_threshold> | 1680 | Format: <buffer_size>,<write_threshold> |
1665 | See also Documentation/scsi/st.txt. | 1681 | See also Documentation/scsi/st.txt. |